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Diffstat (limited to 'newlib/libm/machine/spu/headers/coshd2.h')
| -rw-r--r-- | newlib/libm/machine/spu/headers/coshd2.h | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/newlib/libm/machine/spu/headers/coshd2.h b/newlib/libm/machine/spu/headers/coshd2.h deleted file mode 100644 index f35f8079c..000000000 --- a/newlib/libm/machine/spu/headers/coshd2.h +++ /dev/null @@ -1,115 +0,0 @@ -/* -------------------------------------------------------------- */ -/* (C)Copyright 2006,2008, */ -/* International Business Machines Corporation */ -/* All Rights Reserved. */ -/* */ -/* Redistribution and use in source and binary forms, with or */ -/* without modification, are permitted provided that the */ -/* following conditions are met: */ -/* */ -/* - Redistributions of source code must retain the above copyright*/ -/* notice, this list of conditions and the following disclaimer. */ -/* */ -/* - Redistributions in binary form must reproduce the above */ -/* copyright notice, this list of conditions and the following */ -/* disclaimer in the documentation and/or other materials */ -/* provided with the distribution. */ -/* */ -/* - Neither the name of IBM Corporation nor the names of its */ -/* contributors may be used to endorse or promote products */ -/* derived from this software without specific prior written */ -/* permission. */ -/* */ -/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND */ -/* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, */ -/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */ -/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */ -/* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR */ -/* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */ -/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT */ -/* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; */ -/* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) */ -/* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN */ -/* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR */ -/* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */ -/* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ -/* -------------------------------------------------------------- */ -/* PROLOG END TAG zYx */ -#ifdef __SPU__ -#ifndef _COSHD2_H_ -#define _COSHD2_H_ 1 - -#include <spu_intrinsics.h> - -#include "expd2.h" -#include "recipd2.h" - -/* - * FUNCTION - * vector float _coshd2(vector double angle) - * - * DESCRIPTION - * _coshd2 computes the hyperbolic cosines of a vector of angles - * (expressed in radians) to an accuracy of a double precision - * floating point. - */ -static __inline vector double _coshd2(vector double x) -{ - - // Coefficents for the power series - vec_double2 f02 = spu_splats(5.00000000000000000000E-1); // 1/(2!) - vec_double2 f04 = spu_splats(4.16666666666666666667E-2); // 1/(4!) - vec_double2 f06 = spu_splats(1.38888888888888888889E-3); // 1/(6!) - vec_double2 f08 = spu_splats(2.48015873015873015873E-5); // 1/(8!) - vec_double2 f10 = spu_splats(2.75573192239858906526E-7); // 1/(10!) - vec_double2 f12 = spu_splats(2.08767569878680989792E-9); // 1/(12!) - vec_double2 f14 = spu_splats(1.14707455977297247139E-11); // 1/(14!) - vec_double2 f16 = spu_splats(4.77947733238738529744E-14); // 1/(16!) - vec_double2 f18 = spu_splats(1.56192069685862264622E-16); // 1/(18!) - vec_double2 f20 = spu_splats(4.11031762331216485848E-19); // 1/(20!) - vec_double2 f22 = spu_splats(8.89679139245057328675E-22); // 1/(22!) - - // Check if the input is within the range [ -1.0 ... 1.0 ] - // If it is, we want to use the power series, otherwise - // we want to use the 0.5 * (e^x + e^-x) - - // round to float, check if within range. Results will be in - // slots 0 and 2, so we rotate right 4 bytes, and "or" with ourself - // to produce 64 bits of all 1's or 0's. - vec_uint4 use_exp = spu_cmpabsgt(spu_roundtf(x),spu_splats(1.0f)); - use_exp = spu_or(use_exp,spu_rlmaskqwbyte(use_exp,-4)); - - - // Perform the calculation of the power series using Horner's method - vec_double2 result; - vec_double2 x2 = spu_mul(x,x); - result = spu_madd(x2,f22,f20); - result = spu_madd(x2,result,f18); - result = spu_madd(x2,result,f16); - result = spu_madd(x2,result,f14); - result = spu_madd(x2,result,f12); - result = spu_madd(x2,result,f10); - result = spu_madd(x2,result,f08); - result = spu_madd(x2,result,f06); - result = spu_madd(x2,result,f04); - result = spu_madd(x2,result,f02); - result = spu_madd(x2,result,spu_splats(1.0)); - - - // Perform calculation as a function of 0.5 * (e^x + e^-x) - vec_double2 ex = _expd2(x); - vec_double2 ex_inv = _recipd2(ex); - - vec_double2 r2= spu_add(ex,ex_inv); - r2 = spu_mul(r2,f02); // we can reuse f02 here - - - // Select either the power series or exp version - result = spu_sel(result,r2,(vec_ullong2)use_exp); - - return result; - -} - -#endif /* _COSHD2_H_ */ -#endif /* __SPU__ */ |